Computations of the Effects of Flat and Sloped Steps of Stepped Spillways Types on the Size of Stilling Basin Using Computational Fluid Dynamic

Authors

DOI:

https://doi.org/10.24086/cuesj.v9n2y2025.pp56-60

Keywords:

Flat steps, Slopped Steps, Stepped spillway, Stilling basin, Ansys-fluent, CFD

Abstract

The objective of this study was to assess the impact of stepped spillways on the dimensions of stilling basins. This goal can be reached by using the computational fluid dynamics code FLUENT, which works with the ANSYS software. The experiment’s results were used to test the code. The results from the code were identical to what the first results of the experiment showed. Then, the code was used on 45 different stepped spillways, each with three different step numbers: 20, 30, and 40 steps. Then, the code was used on each of the spillways. There are three different step slopes in this area: 0°, 6°, and 12°. There were five different flows: 0.16, 0.32, 0.48, 0.64, and 0.8 m3/s. The study found that stepped spillways with sloped steps needed a stilling basin that was 16% shorter. This was in contrast to stepped spillways featuring level steps.

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Author Biographies

Pshtiwan O. Zaid, Department Water resources, College of Engineering, Salahaddin University-Erbil, Iraq

Pshtiwan O. Zaid is a member of the teaching staff in the Water Resources Engineering Department at Salahaddin University-Erbil, Iraq. His research interest is  sustainable water resource development and management.

Abdulla A. Abo, Department of Water Resources, College of Engineering, Salahaddin University-Erbil, Iraq

Abdulla Abo is a lecturer at the Department of Water Resources, College of Engineering, Salahaddin University, Erbil, Iraq. His research interest is water resource engineering.

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Published

2025-09-10

How to Cite

1.
Zaid PO, Abo AA. Computations of the Effects of Flat and Sloped Steps of Stepped Spillways Types on the Size of Stilling Basin Using Computational Fluid Dynamic. Cihan U Erbil SCI J [Internet]. 2025 Sep. 10 [cited 2026 Jun. 23];9(2):56-60. Available from: https://journals.cihanuniversity.edu.iq/index.php/cuesj/article/view/1365

Issue

Vol. 9 No. 2 (2025)

Section

Research Article

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Copyright (c) 2025 Pshtiwan O. Zaid, Abdulla A. Abo

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